Bag-type dust collector for drum large-particle urea granulation process

Abstract

The utility model discloses a bag-type dust collector for a drum large-particle urea granulation process, which comprises a dust collection chamber, an air inlet pipe arranged on one side of the dust collection chamber and an air outlet pipe arranged on the other side of the dust collection chamber, and a plurality of dust collection filter bags which are uniformly distributed are arranged in the dust collection chamber. A dust hopper for receiving dust on the surface of the dust removal filter bag is arranged below the dust removal filter bag, a pattern plate for mounting the dust removal filter bag is arranged in the dust removal chamber, dust-containing airflow enters the dust removal chamber from the air inlet pipe, is filtered by the dust removal filter bag to form clean airflow, and is discharged from the air outlet pipe; the air inlet pipe is arranged in the dust removal chamber and is communicated with the air inlet pipe; the air outlet unit is arranged in the dust removal chamber and is communicated with the air outlet pipe; and the mounting unit is arranged on the tubesheet and is used for mounting the dust removal filter bag. Through the arrangement of the mounting unit, the operation is simple and easy, and the dust removal filter bag is convenient to assemble and disassemble.

Description

Technical Field

[0001] The utility model relates to the technical field of large particle urea dust recovery, in particular to a bag filter for a rotary drum large particle urea granulation process. Background Art

[0002] In the granulation section of the urea workshop in a fertilizer plant, it is inevitable to generate gas containing urea dust. Especially during the granulation process of large particle urea, gas with a relatively high temperature and urea dust concentration will be generated. During production, it is necessary to capture and recycle these dusts to increase economic benefits and avoid environmental pollution. Currently, a bag filter is used to remove dust from large particle urea dust. When the dust-containing gas passes through the dust collector, the dust is captured on the outer surface of the filter bag, and the clean gas enters the interior of the filter bag through the filter material.

[0003] In the prior art, after the bag filter is used for a long time, a large amount of dust adheres to the dust removal filter bag. If the dust removal filter bag is not replaced and cleaned, the filtering effect will be poor. At this time, it is necessary to replace the dust removal filter bag. However, the operation of replacing the dust removal filter bag is not convenient, which brings trouble to the staff and the work efficiency cannot be improved. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the above deficiencies and provide a bag filter for a rotary drum large particle urea granulation process.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A bag filter for a rotary drum large particle urea granulation process, comprising a dust removal chamber, an air inlet pipe provided on one side of the dust removal chamber, and an air outlet pipe provided on the other side of the dust removal chamber. A plurality of uniformly distributed dust removal filter bags are provided in the dust removal chamber. A hopper for receiving the dust on the surface of the dust removal filter bag is provided below the dust removal filter bag. A perforated plate for installing the dust removal filter bag is provided in the dust removal chamber. The dust-containing air flow enters the dust removal chamber from the air inlet pipe, is filtered by the dust removal filter bag to be clean air flow, and is discharged from the air outlet pipe. It further includes:

[0007] An air inlet unit, provided in the dust removal chamber and communicated with the air inlet pipe;

[0008] An air outlet unit, provided in the dust removal chamber and communicated with the air outlet pipe;

[0009] An installation unit, provided on the perforated plate and used for installing the dust removal filter bag.

[0010] Preferably, the air inlet unit includes:

[0011] An inclined plate, inclined and placed on one side of the dust removal filter bag;

[0012] The partition plate is arranged at the upper end of the ash hopper;

[0013] The air inlet cavity is arranged below the inclined plate and above the partition plate, and is communicated with the air inlet pipe.

[0014] Preferably, the air outlet unit includes:

[0015] The top plate is arranged at the upper end of the inclined plate;

[0016] The air outlet cavity is arranged above the inclined plate and below the top plate, and is communicated with the air outlet pipe;

[0017] The through holes are evenly distributed on the top plate for the air flow to enter the air outlet cavity after passing through the dust removal filter bag.

[0018] Preferably, the installation unit includes:

[0019] The installation groove is arranged on the flower plate and for the dust removal filter bag to pass through;

[0020] The stoppers are arranged on both sides of the top end of the dust removal filter bag;

[0021] The relief grooves are arranged on the installation groove for the stoppers to pass through;

[0022] The installation components are arranged on the installation groove for installing the dust removal filter bag.

[0023] Preferably, the installation components include:

[0024] The lapping grooves are arranged on the installation groove for the stoppers to lap;

[0025] The telescopic blocks are slidably arranged on the lapping grooves;

[0026] The telescopic grooves are arranged on the lapping grooves and communicated with the lapping grooves for the telescopic blocks to slide;

[0027] The fixed blocks are symmetrically arranged on the lapping grooves with the telescopic blocks.

[0028] Preferably, a spring is arranged in the telescopic groove, and the spring is connected with the telescopic block.

[0029] Preferably, the side of the telescopic block away from the fixed block is set as an inclined surface.

[0030] Compared with the prior art, the beneficial effects of the present utility model are:

[0031] The utility model provides an installation unit, and the dust filter bag is passed through the flower plate through the installation slot until the top of the dust filter bag is close to the flower plate. At this time, the stopper passes through the give way slot, and then the dust filter bag is rotated to make the dust filter bag rotate in the direction of the telescopic block, and the telescopic block is compressed to enter the telescopic slot. The spring is in a compressed state, and when the stopper is in a position between the telescopic block and the fixed block, the spring returns to its original state, so that the telescopic block and the fixed block clamp the stopper, and the position of the stopper is fixed, thereby realizing the installation of the dust filter bag. The operation is simple and easy, and it is convenient to load and unload the dust filter bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0033] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0034] Figure 2 It is a front sectional view of the dust removal chamber in the utility model;

[0035] Figure 3 It is a side sectional view of the dust removal chamber in the utility model;

[0036] Figure 4 It is a top view of the dust removal chamber in the utility model;

[0037] Figure 5 This is a state diagram of the dust filter bag in the utility model being installed on the flower plate;

[0038] Figure 6 It is a structural schematic diagram of the installation slot in the utility model;

[0039] Figure 7 It is a schematic diagram of the structure of the dust filter bag and the block in the utility model;

[0040] Figure 8 It is a structural schematic diagram of the telescopic block and the spring in the utility model.

[0041] In the figure: 1, dust removal chamber; 2, air inlet pipe; 3, air outlet pipe; 4, inclined plate; 41, air inlet chamber; 42, air outlet chamber; 5, partition; 6, ash hopper; 7, dust filter bag; 71, flower plate; 72, installation slot; 73, give way slot; 74, overlap slot; 75, telescopic block; 751, telescopic slot; 76, fixed block; 77, stopper; 78, spring; 8, top plate; 81, through hole. DETAILED DESCRIPTION

[0042] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0043] Please refer to Figure 1-8 , a bag filter, which is applied to the drum large particle urea granulation process, specifically a bag filter for the drum large particle urea granulation process, including a dust removal chamber 1, an air inlet pipe 2 provided on one side of the dust removal chamber 1, and an air outlet pipe 3 provided on the other side of the dust removal chamber 1. A plurality of evenly distributed dust removal filter bags 7 are provided in the dust removal chamber 1. A hopper 6 for receiving the dust on the surface of the dust removal filter bags 7 is provided below the dust removal filter bags 7. A perforated plate 71 for installing the dust removal filter bags 7 is provided in the dust removal chamber 1. The dusty air flow enters the dust removal chamber 1 from the air inlet pipe 2, is filtered by the dust removal filter bags 7 to become clean air flow, and is discharged from the air outlet pipe 3. It further includes:

[0044] An air inlet unit, which is provided in the dust removal chamber 1 and communicates with the air inlet pipe 2;

[0045] An air outlet unit, which is provided in the dust removal chamber 1 and communicates with the air outlet pipe 3;

[0046] An installation unit, which is provided on the perforated plate 71 and is used to install the dust removal filter bags 7.

[0047] With such a design, an induced draft fan is provided at the air outlet pipe 3. The dusty air flow enters the dust removal chamber 1 from the air inlet pipe 2, is filtered by the dust removal filter bags 7 to become clean air flow, and then is discharged from the air outlet pipe 3; the installation unit enables the dust removal filter bags 7 to be installed on the perforated plate 71, facilitating the installation and disassembly of the dust removal filter bags 7, thereby facilitating the replacement of the dust removal filter bags 7 and preventing the dust removal filter bags 7 from having poor filtering effect due to adhesion of a large amount of dust.

[0048] In one embodiment, the air inlet unit includes:

[0049] An inclined plate 4, which is inclined and placed on one side of the dust removal filter bags 7;

[0050] A partition plate 5, which is provided at the upper end of the hopper 6;

[0051] An air inlet chamber 41, which is provided below the inclined plate 4 and above the partition plate 5 and communicates with the air inlet pipe 2.

[0052] With such a design, both the inclined plate 4 and the partition plate 5 are installed on the dust removal chamber 1 by bolts; the dusty air flow enters the air inlet chamber 41 from the air inlet pipe 2, then enters the hopper 6 from the air inlet on the partition plate 5, and then enters the dust removal filter bags 7 for dust removal.

[0053] In one embodiment, the air outlet unit includes:

[0054] A top plate 8, provided at the upper end of the inclined plate 4;

[0055] An air outlet cavity 42, provided above the inclined plate 4 and below the top plate 8, and communicated with the air outlet pipe 3;

[0056] Through holes 81, uniformly distributed on the top plate 8, for the airflow to enter the air outlet cavity 42 after being filtered by the dust removal filter bag 7.

[0057] With such a design, the top plate 8 is installed on the dust removal chamber 1 by bolts; the air flow after being dust-removed by the dust removal filter bag 7 is clean air flow, and the clean air flow enters the air outlet cavity 42 from the through holes 81 and then flows out from the air outlet pipe 3.

[0058] In one embodiment, the installation unit includes:

[0059] An installation groove 72, provided on the perforated plate 71 and for the dust removal filter bag 7 to pass through;

[0060] Stopper blocks 77, provided on both sides of the top end of the dust removal filter bag 7;

[0061] Relief grooves 73, provided on the installation groove 72 and for the stopper blocks 77 to pass through;

[0062] An installation assembly, provided on the installation groove 72 and for installing the dust removal filter bag 7.

[0063] With such a design, the stopper blocks 77 are fixedly connected to the dust removal filter bag 7.

[0064] In one embodiment, the installation assembly includes:

[0065] A lapping groove 74, provided on the installation groove 72 and for the stopper blocks 77 to lap;

[0066] A telescopic block 75, slidably arranged on the lapping groove 74;

[0067] A telescopic groove 751, provided on the lapping groove 74 and communicated with the lapping groove 74, for the telescopic block 75 to slide;

[0068] A fixing block 76, symmetrically arranged with the telescopic block 75 on the lapping groove 74.

[0069] With such a design, the fixing block 76 is fixedly connected to the lapping groove 74.

[0070] In one embodiment, a spring 78 is arranged in the telescopic groove 751, and the spring 78 is connected to the telescopic block 75.

[0071] With this design, one end of the spring 78 is fixedly connected to the telescopic block 75, and the other end is fixedly connected to the telescopic slot 751; the dust filter bag 7 is passed through the flower plate 71 through the installation slot 72 until the top of the dust filter bag 7 is close to the flower plate 71, at which time the stopper 77 passes through the yielding slot 73, and then the dust filter bag 7 is rotated to make the dust filter bag 7 rotate in the direction of the telescopic block 75, compressing the telescopic block 75 to enter the telescopic slot 751, and the spring 78 is in a compressed state. When the stopper 77 is in the position between the telescopic block 75 and the telescopic block 75, the spring 78 is in a compressed state. When the stopper 77 is in the position between the fixed block 76, the spring 78 returns to its original state, so that the telescopic block 75 and the fixed block 76 can clamp the stopper 77, and the position of the stopper 77 can be fixed, thereby realizing the installation of the dust filter bag 7. The operation is simple and easy, and it is convenient for loading and unloading the dust filter bag 7; the one side of the telescopic block 75 and the fixed block 76 that clamps the stopper 77 is set to a U-shape, so that the telescopic block 75 and the fixed block 76 also have a compressive effect on the top of the stopper 77, making it difficult for the stopper 77 to slide vertically.

[0072] In one embodiment, a side of the telescopic block 75 away from the fixed block 76 is configured as an inclined surface, so that the stopper 77 can squeeze the telescopic block 75 so that the telescopic block 75 enters the telescopic slot 751 .

[0073] Working principle: When in use, the dust-laden airflow enters the dust removal chamber 1 from the air inlet pipe 2, is filtered by the dust filter bag 7, becomes a clean airflow, and is discharged from the air outlet pipe 3; the installation unit enables the dust filter bag 7 to be installed on the flower plate 71, which is convenient for the installation and removal of the dust filter bag 7, thereby facilitating the replacement of the dust filter bag 7 and preventing the dust filter bag 7 from having a poor filtering effect due to a large amount of dust adhering to the dust filter bag 7.

[0074] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0075] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, "a plurality of" means more than two. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present utility model.

Claims

1. The bag filter for large-particle urea granulation process of rotary drum is characterized by: The invention comprises a dust removal chamber (1), an air inlet pipe (2) arranged on one side of the dust removal chamber (1), and an air outlet pipe (3) arranged on the other side of the dust removal chamber (1); a plurality of dust filter bags (7) are arranged in the dust removal chamber (1) and are evenly distributed; a ash hopper (6) is arranged below the dust filter bag (7) for receiving dust on the surface of the dust filter bag (7); a flower plate (71) is arranged in the dust removal chamber (1) for installing the dust filter bag (7); dust-containing airflow enters the dust removal chamber (1) from the air inlet pipe (2), is filtered by the dust filter bag (7), and becomes clean airflow, which is discharged from the air outlet pipe (3); the invention also comprises: An air inlet unit, disposed in the dust removal chamber (1) and connected to the air inlet pipe (2); An air outlet unit is arranged in the dust removal chamber (1) and is connected to the air outlet pipe (3); An installation unit, arranged on the flower plate (71) and used for installing the dust removal filter bag (7); The installation unit comprises: A mounting groove (72) is provided on the flower plate (71) and is used for the dust filter bag (7) to pass through; Blocks (77) are arranged on both sides of the top of the dust removal filter bag (7); a clearance groove (73), provided on the mounting groove (72) and used for allowing the stopper (77) to pass through; A mounting assembly is arranged on the mounting groove (72) and is used for mounting the dust removal filter bag (7).

2. The bag dust collector for the rotary drum large granular urea granulation process according to claim 1 is characterized in that: The air inlet unit comprises: An inclined plate (4) is placed obliquely on one side of the dust filter bag (7); A partition plate (5) is arranged at the upper end of the ash hopper (6); The air inlet chamber (41) is arranged below the inclined plate (4) and above the partition plate (5), and is communicated with the air inlet pipe (2).

3. The bag dust collector for the rotary drum large granular urea granulation process according to claim 2 is characterized in that: The air outlet unit comprises: A top plate (8) disposed at the upper end of the inclined plate (4); An air outlet cavity (42) is arranged above the inclined plate (4) and below the top plate (8), and is connected to the air outlet pipe (3); Through holes (81) are evenly distributed on the top plate (8) to allow air flow to enter the air outlet cavity (42) after being filtered by the dust removal filter bag (7).

4. The bag dust collector for the rotary drum large granular urea granulation process according to claim 1 is characterized in that: The installation assembly includes: A lap groove (74) is provided on the mounting groove (72) and is used for lap connection of the stopper (77); A telescopic block (75) is slidably disposed on the overlapping groove (74); A telescopic groove (751) is provided on the overlapping groove (74) and communicated with the overlapping groove (74) for the telescopic block (75) to slide; The fixed block (76) is symmetrically arranged on the overlapping groove (74) with the telescopic block (75).

5. The bag dust collector for the rotary drum large granular urea granulation process according to claim 4 is characterized in that: A spring (78) is provided in the telescopic groove (751), and the spring (78) is connected to the telescopic block (75).

6. The bag dust collector for the rotary drum large granular urea granulation process according to claim 5 is characterized in that: A side of the telescopic block (75) away from the fixed block (76) is configured as an inclined surface.

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